Support Topics Documentation Slack YouTube Blog

Messaging subscription id on multiple devices


(Pgmd Dev) #1

Hello

I wanted to ask if more than one device can have the same messaging subscription Id ?

I am building my app using Kinetise, and I want all app users to receive the same messages which I will be sending on one channel, with no filters “Subscribe for all messages”. I want to run the REST API on the development and save it as a local variable to be used in further message retrieval API calls, is that possible ?

Thanks


(Oleg Vyalyh) #2

Hi. Firstly i want to clarify for myself, why do you need one subscriptionId.
If the client perform subscription on particular channel, it just retrieve unique ‘subscriptionId’. The id is necessary to make a right decision whether the client already receive the message or not.
And you no need to do anything else for receiving all messages from the channel except pooling of our server from every device/client.
https://backendless.com/docs/rest/doc.html#pubsub_retrieve_messages


(Pgmd Dev) #3

Will the messages be received as push notifications ?


(Stanislaw Grin) #4

It depends on what you will pass in the delivery options. Read here for more information:
http://backendless.com/docs/android/doc.html#dynanchor21
Method publish accepts DeliveryOptions instance in which you can set publish policy:
.setPublishPolicy( PublishPolicyEnum.PUSH/PUBSUB/BOTH ) where:

  • push – is only push notification
  • pubsub – is only pub/sub
  • bothpush and pubsub.